Simple, parametric wire spool holder for common small spools (AliExpress / Amazon types like Fermerry 20AWG sets).

Instead of keeping wires in flimsy boxes or loose on rods, this design stores each spool in a compact box with an internal core so the spool can rotate freely while feeding wire. The side opening allows smooth dispensing and a quick way to secure the wire end.

What’s different from the original

This is a full redesign based on the idea from HakiP’s modular spool holder:

• No screws required
• Strong snap-fit assembly (tested in PLA, PETG, ABS)
• Fully parametric design (Fusion 360)
• Adjustable to fit different spool sizes

Enter your spool dimensions and generate a perfectly fitting box.

Key Features

• Snap-fit closure — no hardware needed
• Fully parametric — adapts to different spool sizes
• Internal rotating core
• Wire exit slot with retention
• Stackable / modular concept
• Clean print — no supports needed

Printing

• Layer height: 0.2 mm
• Perimeters: 2 ( Tested )
• If you Use 4 Top/Bottom there is no need for Infill
• Material: PLA / PETG / ABS

Tested with:

• Prusament PLA, PETG
• LDO ABS

All snap fits work reliably with proper tolerances, some force needed! :) 

Important

Before printing:

• The spool holder body needs to be cut into two halves
• Place the cut faces on the build plate
• Repair if your slicer requires it

(Prepared examples included in the 3MF)

Parametric Setup

The model is fully parametric. To fit your spool, adjust these values:

• Spool_Flange_Diameter – outer diameter of the spool
• Spool_Barrel_Diameter – inner core diameter
• Spool_Overall_Width – total width of the spool
• Spool_Flange_Thickness – thickness of one flange

Everything else updates automatically.

Additional parameters:

• Wiggle_Room – adds clearance for easier insertion/removal
• Wall_Thickness – adjust strength vs. material usage

Scaling

The design can be scaled for smaller or larger spools using the parametric values.

For larger or heavier spools:

• Increase Wall_Thickness
• Adjust Wiggle_Room if needed

Customization

CAD files included (Fusion 360)

Fully editable parametric design

You can also emboss labels (AWG, length, etc.) on the top — example shown in the included 3MF.

Need a Custom Size?

If you don’t use CAD or don’t want to deal with the parametric setup, feel free to leave a comment with your spool dimensions:

• Spool_Flange_Diameter
• Spool_Barrel_Diameter
• Spool_Overall_Width
• Spool_Flange_Thickness

I’ll try to generate the model for you and upload it to a folder.

There are many different spool variants (especially from unbranded/Chinese manufacturers), and most don’t provide exact specs, so community input helps expand compatibility.

Notes

• Designed for small hobby wire spools (e.g. 14-30AWG sets)
• Tolerances are tuned for easy snap-fit assembly
• If parts are too tight or loose, adjust Wiggle_Room slightly

Also Thanks sooo much for checking this model out, do not forget to see the original model. Have a nice day, and leave a comment what I can improve or add to make it even better. I just learned parametric designing for this model, but ironed out all the issues. (Or I hope ;) )